[Back to the Fullerene Patent Database]

United States Patent 5,275,705
Bethune, et. al.Jan. 4, 1994

Process for making fullerenes

Inventors: Bethune; Donald S. (San Jose, CA); Johnson; Robert D. (Morgan Hill, CA); Salem; Jesse R. (Cupertino, CA).
Assignee: International Business Machines Corporation (Armonk, NY).
Appl. No.: 987,939
Filed: Dec. 9, 1992

Intl. Cl.:C01B 31/00;
U.S. Cl.:204/173.; 423/445.B;
Field of Search:8;9;60;88;97;98;89;90;93

References Cited

U.S. Patent Documents
5,172,278Dec., 1992Tutt 359/885
5,227,038Jul., 1993Smalley et al. 204/173
5,234,474Aug., 1993Whewell 42/282
5,234,475Aug., 1993Malhotra et al. 44/282

Other References

Primary Examiner: Lewis; Michael
Assistant Examiner: Kalinchak; Stephen G.


The present invention relates to an improved process for making fullerenes having greater than seventy carbon atoms. The process involves electrical heating of a low density carbon rod in an inert atmosphere.

5 Claims, No Drawings

[Back to the Fullerene Patent Database]